Table 1.

List of participants, number of series contributed, sex, year of birth (±x years).

identity	no. series contributed	sex	year of birth
FK	5	male	1999 ± 1 yr
HW	4	male	1993 ± 1 yr
KT	4	male	1993
KZ	5	male	1995
MS	5	male	1991
NB	6	female	1962 (estimation)
NK	3	male	1982 ± 1 yr
NT	5	female	2003
PS	8	male	1998 ± 1 yr
RS	3	female	1997
SQ	3	male	1991 ± 1 yr
ZF	7	male	1982
ZG	12	male	1997
ZL	8	male	1995
total	78